Why does this girl look at me with a kind of sad face?

Ok, here's the situation. There's this girl i knowfor about 1 year and a half now, and we're in college. The thing is that I noticed about a month ago that she'll put a sad face on when she sees me and I can't figure out why she does this. We don't have any conflict going on or anything, plus I rarely talk to her. Any idea why she might be doing this?




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+1 y
Thans for all your answers guys. I appreciate the help and I think I have a pretty clear idea now.
Why does this girl look at me with a kind of sad face?
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